Process for bleaching fats, oils, resins, waxes, and the like.



, v 'UNITED STATESPATENT" OFFICE? f' KARL LDECKE, OF'CHARLOTTNBURG, GERMANY,v AssIGNoR To VTHE FIRM oF f VEREINIGTE eHEMiscHEIWEnKE AeTfieNeEsELLsoH-AFT, or emaror'rnn13Uney GERMANY.

I' at temperature of about 100".

rnocnssroarnmacmncnergens, nEs1Ns',IWAxE s, Np 'um mann.

To all whom 'it 'may concern:

ject of the King of Prussia, l p peror, Charlottenburg, Lohmeyerstrasse '-1, Kingdom ofA Prussia', invented new and *usefulv Improvements `in Processes for Bleaching Fats, Oils', Resins,

ylV axes, and the Like, of.'l which the followa 1n a 'neutral inedl'unr lng is a specification. 4

'lhepresent process for bleaching oils, fats, resins, waxes, yolk, mineral `oils and the like, consists in treating the said 1substances withorganic superoxids preferablv unknown fact has been demonstrated that the organic superoxids both of the aliphatic and of the aromatlcserles are soluble 1n oils,

fats, waxes, resins, minera-l oils and the like' and are precipitated While exerting a bleachl ing effect, particularly :on heatingbutalso in a cold condition. Thisprocess-presen'ts' the special advantage have hitherto been formed when aqueous bleaches are employed and occasion great diliculties in the manufacture, are entirely avoided. Onthe contrary the oil remains quite clear; thereis precipitation, forma-- tion of salt' and so on,

so that no filtration v vor decantation of thebleached oil 'isneces sary. In Asome cases there Ahas,l been no com-4 'pl'ete bleaching but only a change of color. l In-the subsequent vsaponification it has ap-V4 peared, vhowever,fthat nevertheless a bleaching action ghas taken place, as the soapl obtained is considerably clearer than obtained `from untreated oils or fats. vSuch phenom- -ena are4 presented by sulfd oil for example. y

be ad ln some cases' again it has proved to vantageous Vto undertake a vfurther treatment with other lye or the like, after Itlxetreatinent with organic superoxide. applied to fatty acids, mineral oils, paraflin and the like. y

Thequantity of superoxid employed varies according to the color of lthe raw material and the color-desired. for :the finalV product.

Generally speaking vthe quantityv 'of 0.1 to

0.2% has proved to be suitable'. 'Larger 'quantities may, however, beennior smaller ploy'ed. The process is carriedinto practice bydis- 'German' Empire, havel A The hithertb that emulsions, whichA purifying agents, such as alkali A [The process may also'bel 'n Patented oct.' 2o, 190s..

solving the peroxid,`sli1ch as benzoyl peroxid for example, linthe oil or'fat. Inthe lcase of' solid fats the'l solutioi-is Apreferably "form-ed with heating. Such heating lmay Heatingis also preferably effected -to say 100ov C. to 110'- C. degrees during the bleachling process. The Iat' may'a'lso bedissolved benzin, tetraffchloridof carbon, being added lto this solution;

also be effected in the case of" liquid fats such for example as the peroxild All known superoxids haveproved to loev suitable for example, acetyl superoxid, ben- .tion products formed oxul of "introgen on 65... c zoy-l'snperoxid,acetone superoxid, the oxida M by the laction -of tetra' "organic, compounds,

which' aceording'to recentviews 'mus'tlikewisebveregardedassuperoxidsv llxar'nple. 1000 kilograms ofred'palm oil are melted in a doublewalled vessel and t stirring.

heated-T0100o C., 2; kilograms ofben'zoyljl I s nperoxid are then added gradually` while Y 'A solution is soon ,formed-Tha mass is thenfallowed to stand forsome time' in the heat, duringwhichtinie'theV red colorv cliangesto a light yellow. 'According tothe or lessbleaching is'obt'ai-ned.'

that I fclaimasf my invention, and desire to sec'nreby Letters '.Patent, is;

l 1.` The process for vbleaching fats, fatty oils,fmineral oils, resins, waxes, para'lim-yolk,

'dissolving' forganic lsnperoxidsv in the manature of thev oil, fat, wax or'thflike used', l the-quanity ofthe peroxid employedl and likewise the duration'of "the treatment more fatty `acids and vthe like. which consists in f teria-ll to be bleached' and allowing the or@ ganicv .superox'ids be bleached.

oils, mineraloil's, resins, waxes, araiin, yolk, fatty acids and the like Whic consistsln dissolving organic superoxids inthe ma- -terial to bebleached and heating the Said solution. 'v

The -process'for bleaching fats, fatty oi1s,'mineral oils, resins, waxes, paraffin, yolk, fatty aci-ds andy the like which consists in dissolving organic superoxide ina solution vthe saidsolution.

4; The"pr`ocess of bleaching fats,- vfatty' y l i {to-'act onzthe material to 2. The process `for .bleaching fats, fatty of .the material to be bleached and heating j my name this 25th day of June 1907, i the presence of two subscribing Witnesses.

i KARL LDECKE.

oils, mineral oils, resins, waxes, paraffin, yolk, fatty acids and' the like. which consists in dissolving, withoufl aqueous solutions, orvanio superoxids inthe material to be 5 leached, avoiding emulsions, and heating the said solution.

In witness whereof I have hereunto signed Witnesses HENRY HASPER, WOLDEMAR HAUPT. 

